The US X Factor judge posted the picture on her Twitter page, with the caption: "Wishing my Uncle Happy Birthday…"
Britney can be seen smiling away in the snap while wearing her figure hugging LBD.
But although her uncle might welcome a picture of his megastar niece (and the surroundings, which are rather beautiful), we can't help but think Britney looks like she's about to go clubbing.
Is this a little inappropriate or not? We can't decide.
Either way, the 30-year-old does look hot - we'll give her that!
What do you think of Britney's birthday message? Tell us in our comments box below.
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